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1D Simulation Engineer Jobs in California (NOW HIRING)

Rivian

Staff Motor Thermal Engineer

Carson, CA · On-site

You will be a point of contact for direct-oil cooling systems, bridging the gap between rapid 1D ... data, and correlate simulation results with physical hardware to refine modeling accuracy

Rivian

Staff Motor Thermal Engineer

Carson, CA · On-site

You will be a point of contact for direct-oil cooling systems, bridging the gap between rapid 1D ... data, and correlate simulation results with physical hardware to refine modeling accuracy

Rivian

Staff Motor Thermal Engineer

Carson, CA · On-site

You will be a point of contact for direct-oil cooling systems, bridging the gap between rapid 1D ... data, and correlate simulation results with physical hardware to refine modeling accuracy

Relativity Space

Fluid Systems Engineer II

Long Beach, CA

$104K - $156K/yr

... 1D steady-state, fluid networks, etc.) * Leading and participating in system and hardware design ... simulation data analysis Nice to haves, but not required: * Experience with launch vehicles and ...

Relativity Space

Fluid Systems Engineer II

Long Beach, CA · On-site

$104K - $156K/yr

... methods (1D steady-state, fluid networks, etc.) • Leading and participating in system and ... simulation data analysis Nice to haves, but not required: • Experience with launch vehicles and ...

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1D Simulation Engineer information

What is a 1D simulation engineer?

1D Simulation Engineers are professionals who use one-dimensional (1D) simulation tools to model and analyze the behavior of complex systems, such as automotive engines, hydraulic circuits, or thermal management systems. They focus on simulating the performance of these systems using mathematical models, often to predict behavior, optimize designs, or solve engineering problems before physical prototypes are built. Their work helps reduce development costs, improve efficiency, and accelerate product development cycles. 1D Simulation Engineers typically work closely with design, testing, and other engineering teams.

How does a 1D simulation engineer typically collaborate with cross-functional teams during a project?

As a 1D Simulation Engineer, you will frequently work alongside design, testing, and product development teams to ensure that simulation models align with project requirements and real-world data. Collaboration often involves sharing simulation results, validating models with physical test data, and iteratively refining system behavior based on feedback from other engineering disciplines. Effective communication and the ability to translate technical findings into actionable insights for non-simulation stakeholders are crucial for project success.

What are the key skills and qualifications needed to thrive as a 1D simulation engineer, and why are they important?

To thrive as a 1D Simulation Engineer, you need a strong background in engineering fundamentals, physics, and mathematics, typically supported by a degree in mechanical, automotive, or aerospace engineering. Proficiency with 1D simulation tools such as GT-SUITE, AMESim, or Simulink, along with experience in data analysis and modeling, is essential. Strong problem-solving abilities, attention to detail, and collaborative communication skills help distinguish top performers in this field. These skills are crucial for accurately modeling complex systems, optimizing designs, and ensuring effective teamwork in multidisciplinary engineering projects.

What is the difference between 1D Simulation Engineer vs Mechanical Design Engineer?

Aspect1D Simulation EngineerMechanical Design Engineer
Required CredentialsBachelor's or Master's in Mechanical, Aerospace, or related fields; proficiency in simulation softwareBachelor's or Master's in Mechanical Engineering; CAD and design software skills
Work EnvironmentEngineering teams, R&D labs, simulation centersDesign offices, manufacturing facilities, R&D labs
Industry UsageAutomotive, aerospace, energy sectors focusing on system-level simulationsProduct development, machinery, consumer electronics

The main difference is that a 1D Simulation Engineer specializes in creating and analyzing system-level simulations using specialized software, focusing on fluid dynamics, thermodynamics, and system behavior. In contrast, a Mechanical Design Engineer primarily focuses on designing physical components and assemblies. Both roles require engineering credentials, but their daily tasks and tools differ significantly.

What are popular job titles related to 1D Simulation Engineer jobs in California? For 1D Simulation Engineer jobs in California, the most frequently searched job titles are:
What job categories do people searching 1D Simulation Engineer jobs in California look for? The top searched job categories for 1D Simulation Engineer jobs in California are:
What cities in California are hiring for 1D Simulation Engineer jobs? Cities in California with the most 1D Simulation Engineer job openings:
1D Simulation Engineer jobs near you

Design/Applications Engineering 2026

CelLink Corporation

San Carlos, CA • On-site

$120K - $150K/yr

Full-time

Re-posted 9 days ago

Job description

CelLink is pioneering the next generation of flexible circuit technology powering electric vehicles, battery systems, and clean energy applications. Our ultra-light, high-performance interconnects are redefining how energy moves through complex systems, enabling smarter, more efficient, and more sustainable designs.
We're building our pipeline for future opportunities (2026 and beyond) and looking to connect with talented Product Design Engineers who are passionate about battery systems and interconnect design.
If you thrive at the intersection of mechanical design, electrical engineering, and materials science, and want to help shape the future of electrification, we'd love to stay in touch.
About the Role
As a Product Design Engineer on CelLink's Battery Team, you'll design and develop flexible circuit products for advanced energy storage applications, from concept through validation. You'll collaborate closely with cross-functional teams to optimize battery interconnects, current collectors, and voltage sensing harnesses for performance, reliability, and manufacturability.
Key Responsibilities
  • Create and manage 3D models and 2D drawings of battery interconnects, current collectors, and sense harnesses.
  • Select termination methods for BMS/PCBA connections (e.g., welded, crimped, soldered, ZIF).
  • Define and translate system-level requirements into detailed flex circuit product specifications.
  • Build and test prototypes; support design validation and launch activities.
  • Conduct and lead design reviews, DFMEAs, and DFM analyses to ensure design robustness.
  • Develop and execute DVP&R plans to validate product performance and durability.
  • Explore new materials, designs, and processes to enhance the thermal, electrical, and mechanical performance of flexible circuits.
Minimum Qualifications
  • Bachelor's degree in Materials Science, Mechanical Engineering, Electrical Engineering, Physics, or equivalent.
  • Understanding of Li-Ion battery performance and requirements across pouch, prismatic, and cylindrical cells.
  • Experience with cell connection manufacturing processes (laser welding, ultrasonic welding, resistance welding, ribbon/wire bonding).
  • Knowledge of mechanical, electrical, and thermal properties of conductor and insulation materials.
  • Ability to size busbars and conductors using simulations and 1D joule heating calculations.
  • Experience designing and validating electrical joints and connection interfaces.
  • Familiarity with battery pack architecture (series/parallel design, energy/power balancing, safety considerations).
  • Preferred: experience with FEA/CFD simulation tools for mechanical and thermal analysis.
Location
San Carlos, CA
Compensation
$120,000 - $150,000 (final compensation determined by experience and level).
We anticipate multiple openings and will align compensation accordingly.
Join Our Talent Network
CelLink's mission is to accelerate electrification through innovation in interconnect technology. If you're excited about shaping the future of battery and energy systems, we want to hear from you, even if the timing isn't immediate.
Apply now to join our talent network, and we'll reach out when the next wave of opportunities opens!
We believe diversity and inclusion among our teammates are essential to our success. We celebrate diversity and are committed to creating an inclusive environment for all employees while building teams that represent a variety of backgrounds, perspectives, and skills. We are an equal opportunity employer. All employment is decided based on qualifications, merit, and business needs. CelLink participates in the E-Verify program in specific locations as required by law.
CelLink was founded in 2012 and entered volume production in 2018. CelLink provides electrical systems to the world's leading automotive OEMs & EV manufacturers, data center developers, and stationary power companies. The company has raised approximately $315M in funding through private investment and multiple grants from the US Department of Energy. CelLink's investors include 3M, Atreides, BMW, BorgWarner, Bosch, D1 Capital, Fidelity, Fontinalis Partners, Ford, Franklin Templeton, Lear, Park West, SK Telecom, Standard Investments, T. Rowe Price, Tinicum, and Whale Rock.

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